Encoding Basics: Base64, Hex, and URL Encoding Explained

Encoding is about representation, not secrecy. It lets you move data through systems that only accept specific character sets. This guide covers the most common encodings and how to choose the right one.

Base64

Base64 converts binary data into ASCII characters. It is commonly used in email, data URIs, and API payloads. Try it with the Base64 Encoder and Base64 Decoder.

Hexadecimal

Hex encodes bytes as two characters per byte. It is human-friendly for debugging and logs but increases size. Use the Hex Encoder for simple conversions.

URL encoding

URLs must be safe for browsers and servers. Use URL Encode when sending data in query strings to avoid broken URLs and parameter parsing issues.

Which encoding should I use?

• Use Base64 to embed binary data in text contexts.
• Use Hex for debugging or compact byte inspection.
• Use URL encoding for query parameters and path segments.